Web formats
HEX #7357F6: Web standard, compact, copyable
RGB rgb(115, 87, 246): Decimal channels, good for code
HSL hsl(256, 90%, 65%): Intuitive hue/saturation/lightness
Advanced formats
OKLCH: Modern perceptually uniform space
LAB: Scientific color space, less intuitive
CMYK: Print only, never use on screen
Choose based on context
Each format serves a purpose. HEX for sharing, RGB for code, OKLCH for design systems, CMYK only for print.